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The ECL behaves as __________(a) NOT gate(b) NOR gate(c) NAND gate(d) AND gateI have been asked this question during an interview.My doubt is from Emitter-Coupled Logic(ECL) in portion Logic Families of Digital Circuits

Answer»

Right choice is (b) NOR gate

The best I can explain: The ECL BEHAVES as NOR gate because if any of the input voltages go HIGH as COMPARED to the REFERENCE voltage, the output is low and the output is high only when all the input voltages are low.



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